Home / 12,269,328.40-18,403,992.60-7,801,411.60

Finding the Fourth Proportional to 12,269,328.40, 18,403,992.60 and 7,801,411.60

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Solution

The fourth proportional to 12,269,328.40, 18,403,992.60 and 7,801,411.60 is: 11,702,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,269,328.40 : 18,403,992.60 = 7,801,411.60 : x
  2. Step 2: Convert to fraction form
    12,269,328.40/18,403,992.60 = 7,801,411.60/x
  3. Step 3: Cross multiply
    12,269,328.40x = 18,403,992.60 × 7,801,411.60
  4. Step 4: Simplify right side
    12,269,328.40x = 143,577,121,355,954.16
  5. Step 5: Solve for x
    x = 143,577,121,355,954.16/12,269,328.40
  6. Step 6: Final answer
    x = 11,702,117.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.